Bed for cylinder presses



A. F. OSTERLIND BED FOR CYLINDER PRESSES Filed Dec. 27

Dec. 4 1923.

Patented Dec. 4, 1923.

UNITED STATES.Y

AUGUST F. OSTERLIND, 0F ST. PAUL, MINNESOTA.

BED FOR CYLINDER PRESSES.

Application filed December 27, 1921.

To all whom t may concern.'

Be it known that I, AUGUST F. OSTERLIND, a subject of the King of Sweden, residing at St. Paul, in the county of Ramsey and State of Minnesota, U. S. A., have invented new and useful Improvements in Beds for Cylinder Presses, of which the following is a specification.

It is my object to render a printing press of the cylinder type more rapid, accurate and economical in operation by providing an improved bed therefor.

A further object of my invention is to provide a strong and unusually light bed for a printing press of the cylinder type.

My invention also includes novel features of construction which will appear and be more fully pointed out in the following specification and claims.

As is well known, the beds upon which impressions are made in a printing press of the cylinder type, are reciprocated at a high rate of speed. Such a bed commonly consists of a rectangular plate of east iron having a plain upper surface and webs cast integral with said plate, which reinforce said plate on its lower surface. These plates and the webs are necessarily of substantial thick ness in order to withstand warping strains and as they are in the larger presses many square feet in area the beds are of great weight and are a principal factor in reducing speed, while requiring a large expenditure of power in the reciprocating movement. In my improved bed I combine great strength with lightness and thus reduce the momentum of the bed'when in motion.

In the accompanying drawings, which illustrate the best form of my device at present known to me, Fig. 1 is a bottom view of my improved bed and Fig. 2 is a Y' longitudinal section of the same taken on the line 2-2 of Fig. l.

Referring to the accompanying drawings I have used the numeral 10 to indicate the bed proper or plate and 1l the web, which is secured to the plate 10 by screws 12. The plate 10 may be of rolled steel having plain upper and lower surfaces and can therefore be made much thinner than the cast iron beds in common use. The web l1, in the illustrated embodiment, is formed of cast Serial N o. 524,829.

steel in thin hexagonal polygons like a honey comb. A plurality of bosses 13 are provided at suitable intervals at the junction of the polygons and these bosses are tapped in their upper ends to receive the screws l2. The latter screws are inserted through countersunk holes in the plate l0, said holes, after the insertion of the screws, being filled with metal discs 14 to give a smooth plain surface for the cylinder of the press, to bear upon. It will thus be seen that the web 11 is thin and relatively deep to give the desired reinforcement against warping strains. Suitably secured to the lower edges of the web 11 isv a pair of tracks 15, which are adapted to support the bed in horizontal position upon the usual rollers of a cylinder press.

Reciprocating movement may be imparted to the bed by any suitable means such as the rack and gearing of printing presses in 'common use. It will be readily understood 'from the aboveV description that my improved bed, which is built up from separately formed steel parts, is much lighter than the cast iron beds in common usev and is at the same time of ample strength. The plate 10 is replaceable independently of the reinforcing web 11. Thus, if the plate 10 becomes injured or otherwise uneven on its upper surfaceit may be easily removed and either repaired or replaced by a new plate.

Having described my invention what I claim as new and desire to protect by Letters Patent is:

l.y A steel bed for a printing press comprising, a plate having` plain upper and lower surfaces, a separable reinforcing web formed in the shape of a honey comb, a plurality of bosses formed on said web and means adapted to secure said plate to said bosses.

2. A bed for a printing press comprising a metallic plate having plain upper and lower surfaces, a thin and relatively deep metallic web formed separately from said plate in connecting prisms open at their bofses and means for securing said plate to said web.

In testimony whereof, I have hereunto signed my name to this s eciication.

o AUGUST F. STERLIND.

Certificate 0f Correction.

It is hereby certified that'in Letters Patent No. 1,475,963, grunted December 4, 1923, upon the application of August l". Osteriind, of St. Paul, Minnesnta, for an improvement in Beds for ylinder Presses, un error appears in the printed specification requiring,r correction :is follows: Page 1, line 100, claim 2, for the word bosses read hamm; und that the Suid Lettel's'Patent should be read with this correction therein that the saine muy eonfnrm to the recmii ui' the case in the Patent Office,

Signed and sealed this 12th (lay of Fehruanv, A. 1)., 1924.

[SEAL] KARL FENNING,

Acting Uommz'sst'oner o f Patents.

Certificate of Correction.

It is hereby certified thatin Letters Patent No. 1,475,963, granted December 4, 1923, upon the application of August F. Osterlind, of St. Paul, Minnesota, for an improvement in Beds for Cylinder Presses, an error appears in the printed specification requiring correction as follows: Page l, line 100, claim 2, for the Word bosses read bases; and that the Said Letters'latent should he read with this correction therein that the same muy conform to the record of the case in the Patent Office.

Signed and sealed this 12th day of February, A. D., 1924.

KARL FENNING,

[SEAL] Acting Commissioner of Patents. 

